Reaktionsgleichung
[C:1](=[O:3])=[O:2].[OH-:4].[CH2:5]([N+:7]([CH2:12][CH3:13])([CH2:10][CH3:11])[CH2:8][CH3:9])[CH3:6]>>[C:1](=[O:4])([O-:3])[O-:2].[CH2:5]([N+:7]([CH2:12][CH3:13])([CH2:10][CH3:11])[CH2:8][CH3:9])[CH3:6].[CH2:5]([N+:7]([CH2:12][CH3:13])([CH2:10][CH3:11])[CH2:8][CH3:9])[CH3:6]Komponenten
3
Versuchsvorschrift
Process according to claim 4 wherein carbon dioxide is passed through aqueous tetraethylammonium hydroxide to a pH of 8.3 to form tetraethylammonium carbonate plus dissolved carbon dioxide; adding the said tetraethylammonium carbonate to an aqueous solution of nitrates of yttrium, barium, and copper in a Y:Ba:Cu atomic ratio of 1:2:3 at a pH of about 7.7-8.0, thereby to precipitate the said Y, Ba, and Cu as carbonates; recovering and drying the precipitate; calcining the dried precipitate at about 950° C. and cooling the calcined product to about 150° C. over 8 hours.
Quellen und Nachweise
- ORD-Eintrag
- ord-f10e7ecba31049ae8c66db5dd098bed2
- Quelldatensatz
- uspto-grants-1992_09
- Patentnummer
- US05149682
Verknüpfte Notizen
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